A bomb detonated inside the Tower of London killed one person and injured 41, marking one of the IRA's most prominent attacks on a tourist landmark.
Key Facts
- Date
- 17 July 1974
- Bomb weight
- 10–14 pounds (4.5–6.4 kg)
- Deaths
- 1 (Dorothy Household)
- Injured
- 41
- Location within tower
- Mortar Room, White Tower
- Suspected perpetrator
- Provisional IRA
By the Numbers
Location
Cause → Event → Consequence
The attack occurred amid the broader Troubles, a period of ethno-nationalist conflict in the United Kingdom. The Provisional IRA had carried out a series of bombings on the British mainland in 1974, including an attack on the Houses of Parliament one month prior, as part of a campaign to pressure the British government over Northern Ireland.
On 17 July 1974, a 10–14-pound bomb exploded in the Mortar Room of the White Tower at the Tower of London, destroying an 18th-century gun carriage. The blast killed Dorothy Household and injured 41 others, including a dozen children, with many victims suffering lost limbs and severe facial injuries. A scaffolding crew on site immediately organized evacuation of the wounded.
No group ever claimed responsibility, though the attack was widely attributed to the Provisional IRA. The bombing drew international attention due to the Tower's status as a major tourist attraction and demonstrated the vulnerability of prominent heritage sites. On the same day, a second IRA bomb damaged a Social Security office in Balham, South London, though without casualties.